Ruby和Rails"Date.today"格式

Question

在IRB中,如果我运行以下命令:

require 'date'
Date.today

我得到以下输出:

=> #<Date: 2015-09-26 ((2457292j,0s,0n),+0s,2299161j)> 

但是在Rails控制台中,如果我运行Date.today,我得到这个:

=> Sat, 26 Sep 2015 

我查看了Rails的Date类,但无法找到Rails如何Date.today以不同于Ruby的输出显示输出.

任何人都可以告诉Rails如何Date.today或Date.tomorrow格式化日期以便很好地显示？

Answer 1

你问题的答案是课堂ActiveSupport的核心延伸Date.它覆盖的默认实现inspect和to_s:

# Overrides the default inspect method with a human readable one, e.g., "Mon, 21 Feb 2005"
def readable_inspect
  strftime('%a, %d %b %Y')
end
alias_method :default_inspect, :inspect
alias_method :inspect, :readable_inspect

命令行示例:

ruby-2.2.0 › irb
>> require 'date'
=> true
>> Date.today
=> #<Date: 2015-09-27 ((2457293j,0s,0n),+0s,2299161j)>
>> require 'active_support/core_ext/date'
=> true
>> Date.today
=> Sun, 27 Sep 2015

Answer 2

Rails' strftime或to_s方法应该做你需要的.

例如,使用to_s:

2.2.1 :004 > Date.today.to_s(:long)
 => "September 26, 2015" 
2.2.1 :005 > Date.today.to_s(:short)
 => "26 Sep" 

Answer 3

如果你运行这个：

require 'date'
p Date.today.strftime("%a, %e %b %Y")

您会收到：“2015 年 9 月 26 日星期六”